摘要:
The present invention concerns a multifunctional catalyst for the conversion of CO 2 into useful products, such as CO via the reverse water gas shift reaction. The catalyst according to the invention efficiently combined a water sorption functionality with at least one a catalytic functionality into a single particle, by having a solid water sorbent impregnated with at least one metal capable of converting CO 2 from a gaseous mixture comprising H 2 and CO 2 . The catalyst according to the invention allows for higher selectivity in the conversion of CO 2 , at more lenient conditions in terms of temperature and pressure, and improved stability of the catalyst itself. The invention also concerns a process for converting CO 2 , utilizing the catalyst and the use of the catalyst in the conversion of CO 2 .
摘要:
Provided are a structured catalyst for steam reforming capable of favorably maintaining catalytic activity by suppressing aggregation of catalyst particles and efficiently producing reformed gas containing hydrogen from a reforming raw material containing hydrocarbon, and a reforming apparatus using the same. The structured catalyst for steam reforming (1) of the present invention is used for producing reformed gas containing hydrogen from a reforming raw material containing hydrocarbon, and includes a support (10) having a porous structure constituted of a zeolite-type compound, and at least one catalytic substance (20) present inside the support. The support (10) includes channels (11) connecting with each other, and the catalytic substance (20) is metal nanoparticles and present at least in the channels (11) of the support (10).
摘要:
An improved alkylation process utilizing a solid-acid catalyst comprising a cerium rich rare earth containing zeolite and a hydrogenation metal is disclosed.
摘要:
The invention relates to a method of preparing a supported catalyst, which method comprises the steps of; (i) providing a porous catalyst support comprising a framework having an internal pore structure comprising one or more pores which internal pore structure comprises a precipitant; (ii) contacting the catalyst support with a solution or colloidal suspension comprising a catalytically active metal such that, on contact with the precipitant, particles comprising the catalytically active metal are precipitated within the internal pore structure of the framework of the catalyst support. The invention also relates to supported catalysts made according to the above method, and to use of the catalysts in catalysing chemical reactions, for example in the Fischer Tropsch synthesis of hydrocarbons.
摘要:
The hydrocracking method of wax of the invention is a hydrocracking process wherein crude wax is subjected to hydrocracking and the untreated wax fraction that is produced after the hydrocracking is re-supplied for hydrocracking, and wherein hydrocracking of the mixture of the crude wax and untreated wax fraction is carried out in such a manner for a conversion ratio of 50-85 % by mass from the wax fraction with a boiling point of 360°C or above to the light fraction with a boiling point of below 360°C in the presence of a hydrocracking catalyst. It is thereby possible to simultaneously achieve both an increased heart-cut fraction yield (as the product of the hydrocracking) and a reduced normal paraffin content in the heart-cut fraction when the untreated wax is hydrocracked by a bottom recycling system.
摘要:
Provided is a method for producing biodiesel fuel having an excellent oxidative stability and fluidity at low temperature, wherein the method provides selective hydrogenation of a poly-unsaturated fatty acid alkyl ester to the mono-unsaturated fatty acid alkyl ester while inhibiting the formation of the trans-isomer, and a biodiesel fuel composition. In the method for producing biodiesel fuel, a fatty acid alkyl ester prepared from fat and/or waste edible oil by transesterification reaction, and/or (2) a fatty acid alkyl ester treated by esterification reaction of a fatty acid is hydrogenated in the presence of a hydrogenation catalyst containing at least one of noble metals selected from those of Groups 8-10 in the periodic table under low hydrogen pressure.